Historic Average
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Dayton, Ohio
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Monthly Averages & Records -  °F | °C
Date Average
Low		 Average
High		 Record
Low		 Record
High		 Average
Precipitation		 Average
Snow
January -6° 2° -29.4° (1985) 22.2° (1950) 2.65" 6.3"
February -4° 4° -22.8° (1936) 25° (2000) 2.37" 5.3"
March 0° 11° -17.2° (1943) 28.9° (2007) 3.08" 2.6"
April 6° 17° -7.8° (1972) 32.2° (1986) 4.04" 0.2"
May 12° 23° -1.1° (1966) 35° (1998) 4.38" 0"
June 17° 28° 5.6° (1990) 39.4° (1994) 4.17" 0"
July 19° 31° 9.4° (1940) 40.6° (1934) 3.93" 0"
August 18° 29° 6.7° (1946) 39.4° (1999) 3.28" 0"
September 14° 26° 0.6° (1942) 37.8° (1954) 2.61" 0"
October 7° 19° -5° (1952) 33.3° (2007) 2.69" 0"
November 2° 11° -15.6° (1958) 27.2° (1999) 3.27" 0.8"
December -3° 4° -26.7° (1989) 23.9° (1998) 2.94" 3.5"
Daily Averages & Records -  °F | °C
Date Average
Low		 Average
High		 Record
Low		 Record
High		 Average
Precipitation		 Average
Snow
May 1 8.9° 20.6° -1° (1943) 32.2° (2007) 0.15" NA
May 2 8.9° 20.6° 1° (1994) 32° (1959) 0.15" NA
May 3 8.9° 21.1° 2° (1940) 31° (1949) 0.15" NA
May 4 9.4° 21.1° 1° (1957) 33° (1949) 0.15" NA
May 5 9.4° 21.1° 2° (1957) 33° (1949) 0.14" NA
May 6 9.4° 21.7° 3° (1968) 33° (1949) 0.14" NA
May 7 10° 21.7° 1° (1989) 31° (1969) 0.14" NA
May 8 10° 21.7° 1° (1989) 32° (1965) 0.14" NA
May 9 10.6° 22.2° -1° (1947) 32° (1936) 0.14" NA
May 10 10.6° 22.2° -1° (1966) 34° (1936) 0.14" NA
May 11 10.6° 22.2° 2° (1945) 32° (1993) 0.14" NA
May 12 11.1° 22.8° 2° (1938) 33° (1999) 0.14" NA
May 13 11.1° 22.8° 1° (1946) 34° (1999) 0.14" NA
May 14 11.1° 22.8° 2° (1996) 33° (1962) 0.14" NA
May 15 11.7° 23.3° 3° (1973) 34° (1998) 0.14" NA
May 16 11.7° 23.3° 3° (1959) 35° (1998) 0.14" NA
May 17 12.2° 23.3° 3° (1973) 34° (1962) 0.14" NA
May 18 12.2° 23.9° 4° (1973) 35° (1962) 0.14" NA
May 19 12.2° 23.9° 2° (2002) 34° (1962) 0.14" NA
May 20 12.8° 24.4° 5° (1954) 34° (1998) 0.14" NA
May 21 12.8° 24.4° 4° (1954) 34° (1977) 0.14" NA
May 22 12.8° 24.4° 2° (2002) 33° (1941) 0.14" NA
May 23 13.3° 25° 2° (2002) 33° (1994) 0.14" NA
May 24 13.3° 25° 4° (1935) 32° (1994) 0.14" NA
May 25 13.3° 25° 5° (1934) 33° (1953) 0.14" NA
May 26 13.9° 25.6° 4° (1934) 33° (1975) 0.14" NA
May 27 13.9° 25.6° 2° (1961) 33° (1941) 0.14" NA
May 28 13.9° 25.6° 6° (1992) 33° (1941) 0.14" NA
May 29 14.4° 25.6° 6° (1965) 34° (1942) 0.14" NA
May 30 14.4° 26.1° 4° (1947) 34.4° (2006) 0.14" NA
May 31 14.4° 26.1° 6° (1984) 34.4° (2006) 0.14" NA
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